從Nsdocument目錄中刪除數據

Question

如何使用以下代碼從NSDocumentDirectory中刪除已保存的數據。

 NSArray *paths = NSSearchPathForDirectoriesInDomains (NSDocumentDirectory, NSUserDomainMask, YES);
 NSString *documentsDirectory = [paths objectAtIndex:0];
 NSString *fullFileName2 = [NSString stringWithFormat:@"%@nameArray", documentsDirectory];
 nameArray=[[NSMutableArray alloc]initWithContentsOfFile:fullFileName2];

 [nameArray addObject:nameField.text];
 [nameArray writeToFile:fullFileName2 atomically:NO];

Answer 1

嘗試這個 ：

NSArray *paths = NSSearchPathForDirectoriesInDomains (NSDocumentDirectory, NSUserDomainMask, YES);  

NSString *documentsDirectory = [paths objectAtIndex:0]; 

NSString *fullFileName2 = [NSString stringWithFormat:@"%@nameArray", documentsDirectory]; 

[[NSFileManager defaultManager] removeItemAtPath:fullFileName2 error: NULL];    

Answer 2

嘗試這個，

 NSArray *paths = NSSearchPathForDirectoriesInDomains (NSDocumentDirectory, NSUserDomainMask, YES);
 NSString *documentsDirectory = [paths objectAtIndex:0];
 NSString *fullFileName2 = [nameArray objectAtIndex:0];
 [[NSFileManager defaultManager] removeItemAtPath:fullFileName2 error: NULL];